[Elecraft] QRP signals from Pathfinder probe (off topic)

[David Woolley]

315w exceeds the total power budget for the Voyager 1 spacecraft, which 
is currently 254.6 watts.

The only reference to the transmitter power I can find suggests that it 
is 20 watts.  The 315 is probably EIRP, but that is not what was being 
quoted for the Pluto probe.  They both seem to have the same actual PA 
output power.

So at over 36 hours round trip light travel time  (0.002 light years 
range), Voyager 1 scores a lot more points compared with less than 9 
hours for the Pluto probe which has the same power, but with 12dB less 
free space path loss.

-- 
David Woolley
Owner K2 06123

On 16/07/15 20:46, Brian D wrote:
> Voyager is still going strong many times further away than Pluto, 315w to a
> 3.7m dish. from over 19 billion KM.